OpenSourced Ltd

We're working with a fast-growing SaaS company operating at the intersection of data, enterprise platforms, and security. They're building a highly sophisticated product used by large-scale organisations to make smarter, data-driven decisions across complex systems. They're now looking to bring in a Senior / Principal Full Stack Engineer to play a key role in shaping the product and technical direction as they scale. This is a hands-on role with real ownership, ideal for someone who enjoys building high-quality systems, influencing architecture, and working closely with product. What You'll Be Doing Building and scaling a modern, high-performance SaaS platform Working across the full stack with a strong emphasis on clean architecture and scalability Collaborating with product and leadership to translate ideas into technical solutions Designing and developing robust APIs and backend services Leading technical initiatives and mentoring other engineers Contributing to CI/CD pipelines and cloud-based infrastructure Tech Stack Backend: Java, Spring Boot (Data, Security, MVC) Frontend: Vue.js Cloud & DevOps: AWS, CI/CD pipelines Data: SQL, database design & optimisation Architecture: RESTful APIs, scalable system design What They're Looking For Strong experience in Java + Spring Boot at a senior level Deep expertise in Vue.js and modern frontend development Proven experience building scalable, production-grade systems Solid understanding of API design, databases, and cloud environments Ability to take high-level requirements and break them down into technical delivery Experience mentoring engineers or leading technical projects Nice to have: Exposure to cybersecurity, data platforms, or complex enterprise systems Why This Role? Genuine ownership and impact on product direction High-calibre engineering environment Equity as part of the package Hybrid Working within the UK Opportunity to work on a technically challenging, meaningful platform Process If this sounds like something you'd be open to exploring, apply directly or drop me a message for more details.

We're partnered with a fast-scaling SaaS business building a sophisticated platform used by enterprise organisations to make smarter, data-led decisions across complex environments. They're now hiring a Senior / Principal Data / AI Engineer to help shape how intelligence is built into the product - from machine learning models through to emerging agentic workflows. This is not a "pure research" role - it's hands-on, product-focused, and ideal for someone who enjoys taking ideas from concept to production. What You'll Be Doing Designing and building production-grade ML and data-driven features Working closely with product and engineering to embed AI into real-world use cases Developing and maintaining data pipelines and model workflows Experimenting with and implementing agentic / autonomous AI workflows Contributing across the stack where needed (APIs, services, integrations) Improving performance, scalability, and reliability of AI systems Tech & Environment Core: Python (machine learning, data science, AI workflows) AI/ML: Applied ML, data modelling, experimentation Automation / Agents: Agentic workflows, orchestration tools (e.g. n8n or similar) Data: Pipelines, transformation, structured data systems Bonus Exposure: Java / backend systems, full-stack environments What They're Looking For Strong commercial experience with Python in a data/AI/ML context Proven track record of building real-world ML or AI-driven features (not just notebooks) Experience working with data pipelines and production systems Interest or hands-on exposure to agentic workflows / AI automation Ability to work across teams and take ownership of end-to-end delivery Nice to have: Experience working in a full-stack or backend-heavy environment Exposure to Java-based systems Background in complex SaaS or enterprise platforms Why This Role? Work on genuinely interesting AI problems, not just surface-level features Opportunity to shape how AI is embedded into a growing product Strong engineering culture with real ownership Equity included as part of the package Fully remote within the UK If you're building AI systems that actually get used, and want to push further into modern workflows like agents and automation, this is worth a conversation. Apply directly or drop me a message for more details.